Improvement in shingling-brackets



UNITED STATES PATENT OFFICE.,

WILLIAM H. SEYMOUR, OF GLOVERSVILLE, NEW YORK.

IMPROVEMENT IN SHINGLINGiBRACKETS.

Specification forming part of Letters Patent No. 167,699, datedSeptember 14, 1875; application filed August 28, 1875.

To all whom it may concern:

Be it known that I, WILLIAM HENRY SEY- MOUR, of lGrloversville, in thecounty ofFulton and State of New York, have invented new and usef'ulImprovements in Scaifold- Clamps, of ywhich the following, taken inconnection with the accompanying drawing, is a full, clear, and exactdescription.

This invention relates to clamps used for securing a scaffold to aroofin shingling, and it consists in a novel construction of its constituentparts, whereby a hinge is formed for the jaws which dispenses with theuse of extra rivets, pins, or other device, necessitating drilling ofholes, and which renders the clamp capable of being readily taken apartand folded into a small, compact bundle, convenient for the mechanic tocarry about and for transportation, and also capable of more securelyholding the scaffold in place.

My invention is fully represented in the accompanying drawing, whereinFigure 1 is a perspective view of my improved scaffoldclamp as attachedto a shingle. Fig. 2 is aview showing the same folded fortransportation, or for carrying to and from the work by the mechanic.'Figs. 3, 4, 5, and 6 are enlarged views of the several parts of whichthe scaffold-clamp is composed, showing more fully their shape andconstruction.

a is a lever, having at the forward end the usual broad, thin, andslightly upward curved jaw j, with longitudinal ribs to vstrengthen it.Back of and near this jaw the lever a, has a spur or shoulder, s,projecting on its two sides, which projections substitute the extrarivet o r pin, as will be hereinafter more fully shown. Near the otherend it has a slot, c, through Y which the combined brace and staple bpasses,

and close to the front end of this slot upon the top of the lever et isa spur, 1, which is i a part of my improvements. Upon this spur obtain asecure hold upon the shingle. The

forward portion of the plate c is enlarged in width for a distance back,to allow of the hole h of proper size to admit of inserting the 1e- Vera with the shoulders s s. In the forward end of the hole h the innersides of the casting are provided with a seat or sockets, c, formed-bynarrow extensions from 'the jaw j', and cast onto the sides so as to bebraced and supported by both. By inserting the lever a throughl the holeh, and placing the shoulders s s in the seat e, the lever a becomeshinged to the bottom plate c as the former is being depressed, thus notonly rendering them'capable of being` readily taken apart and folded, asshown in Fig. 2, but also dispensing with the extra rivet or pin, andavoiding the expense of drilling holes for that purpose. bis a brace andstaple combined, having on its lower end an angular or serrated foot, i,which ts into a corresponding recess in the under side of the plate c,and is thereby prevented from turning. It is attached to the plate c bypassing it through slot n in the rear portion of said plate. 'Above theintersection of the lever c and brace b the latter is provided with slotm, into which the wedging-keylt is iuserted and forced to depress thelever a, and

close the jaws j j upon the shingle. The upper end of the brace bextends beyond the slot M sufficiently to furnish a brace for thescantling which lies in front on the lever ct.

For the purpose of obtaining a more secure hold upon the roof, the footof the brace b is provided with a spur, u, which, by the weight of thescaffold, is pressed into the shingle sufieiently to assist inpreventing the clamp from jaws are hinged together by a rivet, pin, or

other device, necessitating drilling of holes for that purpose, as I amaware the same is not new, nor does it accomplish the object sought inymy invention. Neither do I claim the brace andl key, as theyr aremechanicalv equivalents for the screw shown in my patent No. 52,757.

What I do claim as my improvements, and

desire to secure by Letters Patent, is-

The bottom plate e, having back of the jaw the hole h of the formdescribed, With the seats or sockets e e therein, and the lever a,having back of the jaw the shoulders s s on its sides, and the spur# ontop, constructed to operate as described and shown, in combination Withthe brace b and key lc,substan tially as and for the purpose set forth.

In testimony whereof I have signed my name and axed my seal in thepresence of two attesting Witnesses, at Syracuse, in the county of'Onondaga and State of New York, this 18th day of August, 1875.

` WILLIAM HENRY SEYMOUR. [1.. s]

Witnesses:

A. B. GILEs, C. HOLMSTRUP, Jr.

